Valve and valve-gear of internal-combustion engines.



C. B. REDRUP. VALVE AND VALVE GEAR OF INTERNAL COMBUSTION ENGINES.

APPLICATION FILED AUG. 26, 1913. 1,121,1 31

Patented Dec. 15, 1914.

Q I lid/16mm,-

G. B. REDRUP.

VALVE AND VALVE GEAR OF INTERNAL COMBUSTION ENGINES. APPIIJIOATION FILED AUG. 26, 1913.

1,121,131. Patented Dec. 15, 1914.

2 SHEETS-SHEBT 2.

OFFICE.

CHARLES BRNJ'AELZJN VALVE AND VALVX-EAB- IEZTEENAXriFOMBUSTIGN ENGINES.

Patented Dec :5, 3.9i4.

Serial Na, W387i meme; muss: flat be confnsad with the vaiw giaar aecol'ding t0 the we 4m. memiy we sleeve only is parted at a 3mm. which is vmeevered by the oihey invented vermin new and nsefai. through Est-motion taking place bements in Valves a nd V$ve-fim2m 42f Inverim 519%?38 in (medirection. Acc0rduni-Combustion Engines 61 'w'ninh foL in; tn 1G$hf feature of the invention the mw'ing a spwifimtinm matting hazween thq mam sleeve and the Thi; inventinn is in? imprmi-mmis in #vppkmniarg Skate 15 secured by mmrelat'mg t0 the valves and 111W uf inmgxszgmg fianggm and rewsses on the sieews temal combustimz mgixws mi" 5 typfi such manna: that the and 0f" its main wherein a sfwvewaivs can: 1 *U3L{'"!.-- and makes a close joint with brie wiih the cyiimler and. mm wim ah): supplementary skew; while en 'ne piston and has fin it; uh w' e a sample and eflieient fawn Q; valve mechanism.

In shew 513w ea'zgfines; wiwri-r we '2 part, vwing the 1mm? in me directian M161- features of the invention will be gminmd {mt hereinafter, and for a mere midesrsitanding 0f the invention centric slfievest an: emnloved, er 1W?- is; (iifiti'jid t the acmmpanying slwws. nmnhanisml ii: veqzsirzwi his? 0 igs-h one form 0? engine is it- :a: m nndersmd. how

Eng each shew (v: mm? dawn, ivpimxnilmfhg whik if on the Q28? hand (mi am is used, the nm-iumifin'x far @peewfim: newssarfly 03" a mmpiicatwi n that auc'n movement may he: imp-an as is necessary for tbs proper mpizning and closing of tin} ports,

Another disadvantage if? siee 'e-x Q'im as at prssem Cami; 12m 1* mumi In be 421% 4 Q5513 the "flluQS so is (me another 5); i? A with vs'r-Jvfi 5m t quertlj: im'widm abiv Ming: i i'm-enhor: the??? T: valve con-sen v a xx i mnnfling :her (m with a q'spplemen w positively rsvipraimruq by i'ma mam through 21 Endpmutwr; minivan a iopgmg Szhis arwmgw n}; Wu: for operating" flaw mm simpkv En must? @4111, ia:!=;- of mechanism is mvgmred tn 1; gflemenmry sleew. Iii-.1 ta that the inventmn mm m wives and value 295w 'v-a'hwein 51in: mlw w mncenta'k; mt time Hag i! g mni mrrmmde; the elm E 5M; ilhlss'fmtion is givsn merely f mam-mp2s.

JAMIE rrwzim s P-igum 1 is a Ringi- 1 of he engine, am Fig. 2 is 11153 View 0f part of the mechat a wives in difi'erent occupied fin Fig. l.

' mam uf refmenve mfer to fika am ibe drawings I A 05 the angmm the mails 0f nmtmc'inn are, waiter-6503515., e wefhiznm n manner with. zimim lwmi A afar-83001241..

{EQEZF B n-Alias exhaust ports 1?; iitylmdfiza Wzizm are situated mward may take the form (A complete give a large port area. in the m fihOWn provision is made for m Em auppiiefi am two places B QUE the Emu at to he collected ff" ami- J a'iflmugz'u thifl aramt esaeniin l. The dividing wm 211v inlet and exhaust pasfembiy cut inthe eylindm iczmriczziiy with the cylinder '7 g'nsi-"w; 3&1 a main shew E in tha innot surrounding aha engiw "a Maw $23.9 2mm: shave in; ad'gacmqt the suggested with. suppleme s F; sd rwm m mi e? mm aghmmt ports m the cghnder ranged with ii'ps-nm F me a: 3 d upplementgngv game (i partially by r'simijp.

swat (prefqmiviy She fcylinder the supplamntary sleeves up,'sc that let and exhaust ports in the cy imdcr "ill remain closed. Vfhcn the ins-inaction has bccn taken up the end of the main sleeve comes into engagement with the fiange G on the supplementary slecve cud than the upward movement of the latter is 'cominenced. This position of tho sleeves is shown in Fig. 2. The upward movement 01' both sleeves continues then nearly to the end of the power stroke of the istcu so that this upward movement of the s caves tckes place during the periods in which the glcctcst pressure exists in the cvlindsr. The ends of the sleeves are thcrciorc in close contact during this period so that'with the aimssoid packing there is no danger of leakage taking lace from the cylindcr. Just hciore' the on of the powor stroke of? the piston, 2'. 6. just hcforo the main sleeve cozn'l'ucnckss its downward movement, this sleeve will he in such a position that its ports E com= plate-1y register with the exhaust certs 3 in the cylinder. No leakage to czlzaust can take place however because the sup lcrnem tary sleeve is covering the ports J. As, however, the main sleeve moves dow wardly it will commence to cpsn the ports E and thus will allow exhaust to commence, since by reason of the lost-motion connection between the two sleeves the downward movement of the supglmcntcry slwvc does not commenceimmcdiaifclv tin downward movement of the main slcsvc commences. During this exhaust orscaveng'ing stroke of the piston the main sleeve takes up the lost: motion between the two sleeves and cornmences to bring down tna supgilcmeutary sleeve, this lacing the position of the carts shown in'Fig. 1. By the cod of the orhcust stroke the supplementary slcsve has almost closed tho exhaust port in cylindcr. The abovo dcscrihcd cycis of opera.- tions is then rte-commenced,

An engine consiructed and cpfcrating a described'will giro a high dogma of com prcssicn and consequently a high degree 0 efficiency, while the simplicity of the valvc gear neccssm'jr for the operation oi the sleeves is an important factor in securing rcliulile working of tile angina Various modiiicclicr i may as made in the details of this invention Wli-llflllideparting from the spirit flier-sci; for example the supplementary valve may have a {Jfififiii extension which fits over the "min alcove in order to providc ilic lost-moiioi1 canoes i: or the extension suppicmcn sleeve may in ii: of tha What 5 claim as my i i 1 v v to secure my Lczlsrs a longitudinally of the cylinder from one another, s main sleeve concentrically dispwcd within-the said cylinder and having a, circumferential series of ports, means for rcciprocsting' said mainslecve, a piston recliprocatmg within said mam sleeve, a sunpremcn'tcry unported sleeve telescoped in an annular groove in the main sleeeve and movable therein to cover and uncover said circumferential series of ports which are'in tho grooveof the main slccve,,th e groove being of snch width as to allow of lost motion between said alcoves, substantially as I described. .A; V v

2.1a an internal. mmbu8t 3l cngine they comoination of, a cylinder havi fcrential inlet and gxliaust ports laped' said groove and -Slld supplementary sleeve being so formed as to ,constituto a gas-tight joint when the sleeve isvinposition torcoverthe ports in the main slceve,"substsintially as described. Q I

3. in an internal combustion engine the combination of, a cylinder haviu'gcircumfercn'cial inlet and exhaust ports displaced longitudinally of the cylinder from one another, a main sleeve reciprocatinf in said cylinder having an interns. conical seating formed on one end, a tubular extension on the same end thereof having s shouldcr op-oscd to said conical seating and. a circum crcntial series of ports between the shoulder and said conical seating, a, supplementary sleeve entering said extension and having a conical seating thereon engaging said seating on the main sleeve, and a'shoul der thereon engaging said shoulder on the tubular extension, inlaid seating and said shoulder bein so disposed relative! their collperatmg parts as to permit 0 hi motion between said main slave. and a, sumilcmontsry alcove substantiallgfcs do scribed;

4. an internal combustion engine tho combination of, a cylinder having cizc' ferenaial inlctand exhaust ports (ilSpi"'3i longitudinally of the cylinder from one another, a main sleeve rcciprocatin in said cylinder and having an interna conical *"ng formed on one end, a tubular cxten on the ame end thereof having a shculucr lo said conical scaling, and u motion between said main sleeve and said supplementary sleeve and an internal flange on said supplementary sleeve exposedto the 1 pressure of the gases in the cylinder on one side, and protected therefrom on the other side by said main sleeve, substantially as described.

. In an internal combustion engine the combination of a frame, a cylinder having circumferential inlet and exhaustports displaced longitudinally of the cylinder from one another, a main sleeve concentrically disposed within said cylinder, and having a circun'iferential series of ports, a piston reciprocating within said sleeve, a supplementa-ry sleeve concentrically disposed Within said main sleeve, means operatively connecting said main sleeve and said supplementary sleeve by a lost motion device, said supplementary sleeve being movable rela tively to said main sleeve to cover said ports in said main sleeve, a crank-shaft opera tively connected to said piston, a half-speed shaft, driven therefrom, a crank on said half-speed shaft, a lever pivotally mounted on said frame, a connecting rod couplingsaid crank on the half-speed shaft to the end of said lever and reciprocating it, and a. link connecting the endof said lever to said main sleeve to reciprocate it, substantially as described.

In. testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES BENJAMIN REDRUP.

W' itnesses CHARLES E. TAYLER- A. R. BOYLE. 

